Why doesn't moving my mouse cursor into the top left-hand corner of my screen present windows?

Hi,

I’ve found that moving my mouse cursor into the top left-hand corner of my screen doesn’t present windows (showing them side-by-side, in a similar way to how going to activities in GNOME does) under KDE Plasma 5. I have not changed my “Screen Edges” settings in the KDE System Settings window, so it’s not related to that. Any ideas what the problem is?

Thanks for your time,
Brenton

This is even if I have several windows opened. Putting my mouse cursor into the top left-hand corner does absolutely nothing.

I used to not have this problem either, when I first installed OT placing my cursor into the top left-hand corner of my screen did present windows.